Uveitis is basically an inflammation of the eye. The condition involves all inflammatory processes of the middle layers of the eye, also called the uveal tract or uvea. The uvea includes the iris (colored part of the eye), choroid (a thin membrane containing many blood vessels) and ciliary body (the part of the eye that joins these together). The uvea is very important because its many veins and arteries transport blood to the parts of the eye that are critical for vision. To see more details visit,www.medicinenet.com